hmm...that doesn't happen for me.

i have my own issue with looping video..
with regular audio, mp3, files my looping is dead on. for some reason with video more than audio the looping tends to be more off beat.

Video looping is actually only the the audio looping, but you knew that...Can you send me ones of your loops itchie? i'd like to see this.. Also on the Video-SL installer Cd, there are seemless loops on there, have you tried them?

That happens to me on autoloops for music videos sometimes too. When I see it, its like 2 of every 7 loop cycles gets a dropped frame.

how often do you have your keyframes set?

I get this too, especially when I have shorter ambient clips. I'll see if I can flnd a clip that does this...all of my clips are mp4 3000k bitrate w/ keyframes every 10 frames.

Yeah, i'd like to see some problematic files, and test em myself. cheers..

I'll send some videos your way when i get home tomarrow.
Thanks

Eder, what do you use to encode your mp4s?

final cut. i don't mind the wait.

yea, i do know that. it's just weird that when its an mov file it loops off beat more often then an mp3.

I've purchased the download version of VSL. Is there anyway to download the seamless loops from the installer cd?

i uploaded one of my MP4 loops to the serato server. it loops fine in quick time but not VSL. But now i'm descovering that not all of my MP4s (that i've made and encoded) are doing this. i'll try to find what's different.

so the difference between my MP4s that loop perfect in VSL and don't loop perfect in VSL is: files encoded with mediacoder work great. files encoded with handbrake don't. they both loop fine in quicktime. it's something that handbrake does that VSL doesn't like. here's MIB

MediaCoder MP4 (loops smooth)
***********************************************************
Length(s) 187.78 (Samples: 112665, Timescale: 600)
Size 74.19 MB
Movie Tracks:
VideoType: avc1, 640x480
Component 1) ireP, H.264 (Perian) v.30004, Decompresses video stored in H.264 format.
Component 2) lppa, H.264 Decoder v.40004, Decompresses images stored in the H.264 format.
Component 3) xppa, AVA_HD, Demonstration AVA_HD Decompressor.
Audio Tracks:
AudioType: mp4a (48000kHz, 16bit)
Component 1) lppa, MPEG-4 Audio v.10009, MPEG-4 Audio Decompressor component
Frame rate: 29.97 per second
Keyframes: 469 (min: 8, max: 13,avg: 12.0)
This file supports internal metadata
***********************************************************

HandBrake (doesn't loop smooth)
***********************************************************
Length(s) 32.70 (Samples: 1569792, Timescale: 48000)
Size 12.31 MB
Movie Tracks:
VideoType: avc1, (JVT/AVC Coding) 640x368
Component 1) ireP, H.264 (Perian) v.30004, Decompresses video stored in H.264 format.
Component 2) lppa, H.264 Decoder v.40004, Decompresses images stored in the H.264 format.
Component 3) xppa, AVA_HD, Demonstration AVA_HD Decompressor.
Audio Tracks:
AudioType: mp4a (48000kHz, 16bit)
Component 1) lppa, MPEG-4 Audio v.10009, MPEG-4 Audio Decompressor component
Frame rate: 29.97 per second
Keyframes: 64 (min: 15, max: 16,avg: 15.2)
This file supports internal metadata
***********************************************************

You should take the same file and encode it both ways and then test it.

I've done that. Same results. Mediacoder works. Handbrake doesn't. The only reason i don't use meadiacoder is it's PC only :(

Itchie..

In quicktime, look at the movie properties, you'll find that your audio track is .04 sec longer than the video track, thus why you get the flash.. I'd recommend that you turn off the the sound (checkbox) when exporting from final cut.

Word. I think I'll mute handbrake's audio. Thanks.

no worries. :)

so i went back and checked the file coming out of finalcut in quicktime. the audio and the video are the same length (as i thought). when i throw it into handbrake, it chops off/ shrinks the video file by .04 sec. i f'ed with all the different settings in handbrake and it's still an issue. for now i'll mute the audio in handbrake like i said and take it up with the handbrake people... thanks for the help Warik!

Good to know... :)

:( spoke to soon... i unchecked the audio in handbrake and it is still flashing VSL even though there is no audio. i'm gonna do more testing and try to figure this out.

Just double checking... did you check the edges of the handbrake-video? Are there any frames you do not expect there to be?

actally, the handbrake video is missing a frame comparied to original.

it seem like the 'flash' is one frame long, aswell.

The flash is black?

so it was my B-FRAME setting. i change it from 2 to 0 and now i have the same amount of frames as the original and the flash is gone. i swear i tryed that before i got in this deep with this thread. handbrake is still shortening the video track however but i think i can live with .04 sec.
by the way, is there a downfall to having my b-frames set to 0. i'm unclear on their purpose

It will affect compression ratio.

as long as it doesn't change the quality or VSL playback i'm good.

It will affect the quality since compression ratio and bitrate have a connection. But I think the differences might be not so big.

itchie, so let me get this straight, you encoding your own content in handbrake? if so, thats kinda weird (for me) as i would encode it out of quicktime pro..

Quicktime does't have a deinterlace or detelecine option. footage that is progressive and encoded in quicktime and handbrake look the same. Plus i'm a fan of x.264

Quicktime does have deinterlace, its in the "size" when exporting.... but yeah.. stick to what you like, as long as your happy.. ;)

Does QT have a detelecine option?

i see. the deinterlace option is available if exporting to mov. i was exporting as a mp4, h.264, aac etc.

When i transfer from dvd through handbrake (music videos) its all about mp4, but when i've been editing my own footage (camera) i export to mov, if handbrake let me export to mov, i'd be doing that.

When using handbrake and from what i understand about telecine, you only need to detelecine sources that are movies/cartoons, which have been produced for film.. (shooting from the hip here). Its a option i don't use and would explore if i was getting this type of effect trac.handbrake.fr

I always say, stick the to basics (deinterlacing), there's no need to make things more complex than they already are.. :) yah?

i've been trying quicktime but even with 'deinterlace source material' checked, i'm still getin an interlaced output. i'm gonna spend some time in the apple forums to see what's up. i'd like to be able to have quicktime as another encoding option

Nooooo! :) Really, you may lose half of the vertical resolution (and producing other artifacts when just doing deinterlace when you should be doing detelecine).

Nik,
Did you read the link i put up? Its not about the resolution, its about the the frame rates.

Itchie,
Thats weird, one would assume that once that option is checked, it should work... damn assumptions.. Still though i'd de-interlace in the editing program first before exporting, then you shouldn't need that option.

Yes, Warik, I know that page ;) I understand that this is about frame rates and not about resolution.

What I was trying to say is that by applying a deinterlacing filter (depending on which type of deinterlacing you are using) you end up with lowering the vertical resolution by half at worst (that is if you simple blend each even and odd line to get rid of "combing").

Whereas if you apply proper detelecine (and as you said... this makes only sense of the original material has been produce for film/24 frames progressive *and* the current format is at 29.97 and has been telecined) you will *not* reduce the resolution or lose quality, b/c you will be able to recreate the original frames at 24fps.

Please correct me if I am wrong anywhere.

sounds right to me. :D

Nik, Are you saying to take your MPEG2 file and convert it to 24 FPS?

What does MPEG2 have to do with 24FPS? An MPEG2 file can be at 24fps, at 26fps at 300.34245fps or at 39fps or whatever ... (I hope the MPEG2 specs do not specify a fps limit ;) ).

Justin, I have explained the detelecine/deinterlace to you numerous times, but you didn't want to or couldn't understand. I won't try it again.

Nik, once again your attitude sucks. Please never think that I was asking you to explain anything to me. I was asking you a question. I see, for the last time I hope, that you are incapable of engaging in any type of dialog.

Sad fpr you that you are that way.

Is there a difference?

However, maybe I misunderstood your question. My apologies.

Let's try it again.


Not sure what you exactly mean. Can you elaborate on that question?

play nice guys..

Trying to Warik, it just gets old

?